Izvestiya of Saratov University.

Chemistry. Biology. Ecology

ISSN 1816-9775 (Print)
ISSN 2541-8971 (Online)


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Russian
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Article type: 
Article
UDC: 
582.675.1

Vitality Structure and Ontogenetic Strategy of DeLPHINIUM litwinowii (Ranunculaceae)

Autors: 
Bogoslov Artem Valerievich, Saratov State University
Kashin Alexandr Stepanovich, Saratov State University
Shilova Irina Vasilievna, УНЦ «Ботанический сад» Саратовского государственного университета имени Н. Г. Чернышевского
Kritskaya Tatiana Alexeevna, Saratov State University
Parhomenko Alena Sergeevna, Saratov State University
Grebenyuk Lyudmila Vladimirovna, Saratov State University
Abstract: 

The article presents the results of a study of the vitality structure of four Delphinium litwinowii Sambuk coenopopulations from the Penza, Tambov and Voronezh regions in the period from 2017 to 2018. The most northern coenopopulation from Penza region in 2017 showed the strongest vitality, while the weakest was the Voronezh’ coenopopula- tion, located to the south, near the village of Vladimirovka. Most of the coenopopulations over the observation period are rated as prosperous; coenopopulation from the vicinity of the village of Vladimirovka is de- fined as depressive. The index of dimensional plasticity of D. litwinowii is rather low – 1,42. In D.litwinowii, with an increase of stress, there is first a weakening, and then an increase in interdependence in the development of plant structures – in other words, there is an alternation of the stress and protective component in the ontogenetic strategy.

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